A random variable X has the following probability distribution .

X: -2 -1 0 1 2 3

P(x) 0.1 k 0.2 2k 0.3 3k

(a) Find k

(b) Evaluate P(X<2) and P(-2 <X <2 ).

(c) Find the cdf of X.

(d) Evaluate the mean of X.

asked by guest
on Feb 16, 2026 at 11:08 pm



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